Riveting mechanism.



No. 700,26l. Patente-d May 20, |902.

' J. L. THOMSON.

BIVETING MECHANISM.

(Application led July 11, 1901.) (No Model.) I 2 Shaetg-Sheet l.

l al? WITNESSES.l E A I ENTOR a4 TTORNE Y.

'THE NoRms PETERS co, PHnTo-LITITIQ. wAsMmaToN. D. c.

No. 7oo,26|. .1 1 Patented may 20,1902., .1. L. THoMsoN.

RIVETING MECHANISM. (Application @led Ju'1y11, 1901.) (No Model.) l 2 Sheets-Sheet `2. 1

UNITE 'STATESv u PATENT OFFIcE. j

YJUDSON LUVATOR THOMSON, OF CLAYTON, NEIV YORK, ASSIGNOR TO J. L. THOMSON MANUFACTURING COMPANY, OF NEV YORK, N. Y.,

A CORPORATION OF NEW YORK. l

RIVETlNe M EcHANl-swl."

SPECIFXCATION forming part of Letters Patent No. 700,261, `dated May 20, 1F02. i

Application filed July 11, 1901. Serial No. 67,858. (No model.)

To @ZZ wiz/0m, L'tmay concern: 4

Be it known that I, J UDsoN LUvAToR THOMSON, a citizen ofthe United States, and a resident of Clayton, in the county of Jefferson, in the State of New York, have invented new and useful Improvements in Riveting- Tools, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

The object ofthis invention, is to provide a simple, inexpensive, convenient, and efficient tool for fastening rivets to articles toheV united thereby; andto that endthe inven-l tion consists in the novel construction and combination of the component parts of the riveting-tool hereinafter described, and set forth in the claims.

In the accompanying drawings, Figure lis a side View of a riveting-tool embodying my invention. Fig. 2 shows the same with the side plate of the head removed to illustrate the riveting 'mechanism carried in said head. Fig. 3 shows the tool in position for receiving the rivet to be fastened to'articles'placed upon the anvil. Figs. 5 and 6 are transverse sections, respectively, on lines X X and Y Y in Fig. l viewed in the direction of the arrows. Fig. 7 'is a fragmentary front view showing the plunger in its operative position upon the rivet clenched for fastening the articles resting upon the anvil. Fig. Sis an enlarged detail view illustrating the construction of the anvil and its effect upon the rivet. plan view of the anvil, and Fig. 10 is arde"- tail View illustrating more clearly the operation of the lever on the toggle-arms.

Similar letters of reference indicate corre-V sponding parts.

'A designates the head or frame which supports the riveting mechanism. The back of this head is formed flat to allow it to rest snugly on the side of a .post or other suitable stationary support, to which it is rigidly secured, preferably in a vertical position, by means of-screws, asindicated by dotted lines a co in'Figs. 1, 2, and 3 and in full lines in Fig. 4 of the drawings. The hsaid head is formed with a removable side plate A to permit access to the interior of the head when Fig. 4 is a front view of the tool Fig. 9 is a ,ingq the prongs of bifurcated'or so-called split rivets, andv for that purpose the face of the anvil is formed with an annular groove c, which is concaved in cross-section and surrounds a central conical projectionjc, ,as shown in Figs. S and 9 of the drawings..

The interior of the head'A is formed with 'a pocket or recess D, at the lower end of which is a vertical channel h, extending through thehead and in line with the anvil C, as shown in Fig. 2 of the drawings. In said channel slides the plunger P, which is thus axiallyin range 'with the subjacent anvil.' This plunger is loperatedbymeans'of aglever L, pivoted at necessary'. The lower endof the head is one .end tothe upper part 'of the head A, as

'shown'atich and is formed with a cam `e, which faces toward the head. From said lever motion is transmitted to the lplunger by means of toggle-arms t t, pivoted to each other and disposed in the cavityD of the head. The toggle-arm t is extended upward and pivoted at its upper end to the upper portion of the head and the other toggle-arm t is extended downward and pivotally connected to the up ,f

per end of the plunger P. The toggle-arm t 1' isV movably connected to the lever L by means of a lateralex'ten'sion t2," formed on the lower end, of said toggle-arm and terminated'with a lug g, which engagesv a guide-groove h, formedin the side'of the pivoted end portion of the'lever L and parallel with the cam e. The lower end of the other toggle-arm t is formed with a lateral extensionV t3, which is terminated with a lug g', engaging a groove h', formed in the head A and curved similar to the groove h. The plunger P is pushed toward the anvil C by the operator depressing the lever L, which presses"'with its cam e on the joined ends of the two toggle-arms and forces said arms from a deflectedto a rectilinear position, and in the operation the con- Ygrooves 7L 7L controls the direct-ion ol' the movement of said toggle-arms, so as to obviate binding and undue friction ol' the plunger P in the channel b.

One of the salient features ol' my invention is the aforesaid operation of the toggle-arms t t by means of the cam e on the pivoted lever L hearing directly on the said togglearms. It will be observed that when the toggle-arms are in their deflected position, as shown in Fi". 3 of the drawings, which position requires the greater power to press them toward the rectilinear position, the power of the lever L is at its maximum, owing to the bearing of the toggle-arms on the cam e being near the pivot or fnlcrum (Z oli the lever. The connection of the extension Z2 with the guide-groove 7L in the lever L serves to draw the toggle-arms into their deflected position, and thus retract the plunger P by the upward movement of the lever.

To sustain the rivet o' in position tobe forced through the articles lying on the anvil C, as indicated by dotted lines t' in Figs. 3 and L of the drawings, I interpose between the anvil and plunger suitable supportingarms Z Z, which are attached to the head A and are formed at their free ends with lingers Z Z', shaped to hold between them the shank ofthe rivet. Thesupport-ingarmsareformed of spring-steel and sufticiently flexible to allow the head of the rivet to be forced down from the hold of the fingers Z Z in the operation of the plunger, driving the rivet through the articles t'.

That I claim as my invention is l. The combination of a stationary head supporting the riveting mechanism, an anvil secured to said head, a plunger guided in the head in line with the anvil, toggle-arms pivoted respectively to the head andto the plunger, a lever fulcrnmed on the head and operating the toggle-arms, guides on the lever and on the head and lateral extensions on the toggle-arms engaging said guides and controlling the direction of the movement of the toggle-arms as set forth.

2. The combination ofthe head supporting the riveting mechanism, an anvil secured to the head adjustably for rivets of dilerent lengths, a plunger guided in the head in line with the anvil, a rivet-supporter interposed between the plunger and anvil, toggle-arms plunger, a lever fulcrumed on the head and operating said toggle-arms, guides on the le ver and on the head and lateral extensions on the toggle-arms engaging said guides and con trolling the direction ofthe movement of the toggle-arms as set forth.

3. The combination of the head supporting the riveting mechanism, an anvil secured to the head adjustably for different lengths ot' rivets, a plunger guided in the head in line with the anvil, a lever pivoted at one end to the upper part of the head, a curved guidegroove in the side of the pivoted end of the lever, a similar guide-groove in the lower portion of the head, a toggle-arm pivoted to the upper part of the head and formed at its lower end with a lateral extension terminated with a lug engaging the guide-groove in the lever, and a toggle-arm pivoted at its upper end to the lower end ot' the first-mentioned toggle-arm and connected at its lower end to the plunger and formed thereat with a lateral extension terminating with a lug engaging the guide-groove in the head substantially as shown and set forth.

Ll. The combination of the head supporting the riveting mechanism, the anvil secured to the head adjustably for ditterent lengths of rivets,the spring-arms terminating with rivetsupporting fingers over the anvil, the plunger guided in the head in line with the anvil, the lever pivoted at one end to the upper part of the head and formed with a cam vfacing to ward the head and with a guide-groove parallel with said cam, a guide-groove in the lower portion of the head, toggle-arms pivoted respectively to the upper part of the head and to the plunger and bearing at their junction on the cam of the lever, a lateral extensionformed on the lower end of the upper toggle-arm and terminated with a lug engaging the guide-groove in the lever, and a lateral extension formed on the lower end of the lower toggle-arm and terminated with a lug engaging the guide-groove in the head, all constructed and combined as shown and set forth.

JUDSON LUVATOR THOMSON. Witnesses:

LoIzETT.,\L WHEELER, JULIA SMITH.

lll" Sil IOO 

